Actualy Andrew at risk of tooting my own horn...
Toot Toot.
I made the Collar for Todd and his wife. He had done such a fantastic job on the costume and since her very first trooping event IN the costume was going to be with The Wook, we had to come up with something FAST.
I looked at some screen caps and did the best I could. I only bring this up so I can tell everyone how it was made. In case they want to do the same.
I took a 12" diameter piece of 1/4" plastic pipe. Not sure it was PVC. It was green if that helps. It is pretty light weight. Cut off a 2" thick piece of it.
Then used plastic chain (also super lightweight) and made a quick release near the collar by cutting a notch in one link. That way if Boushh takes a nose dive, she doesn't pull the wookiee down with her.
I lined the inside of the collar with a very soft velcro for comfort. And also made a easy release strap of velcro to put the collar on and take it off with ease.
Attached a metal ring that looked about the right size to the movie, a rivet hindge system , and a thing to the front to attach the chain.
Weathered it all up and voilà . It was alot of fun. Add a hyperfirm Thermal Detonator (better to troop with then your MR one. Won't break) and your good to go.